package com.cloud.lesson.controller;

import com.cloud.lesson.enity.CommonResult;
import com.cloud.lesson.enity.Payment;
import com.cloud.lesson.lb.LoadBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @author: Mr.Lai
 * @createTime: 2020/12/19
 * @classNote:
 **/
@RestController
@Slf4j
public class OrderController {
    //单机
    //public static final String PAYMENT_URL="http://localhost:8001";
    //集群
    public static final String PAYMENT_URL="http://CLOUD-PAYMENT-SERVICE";
    @Resource
    RestTemplate restTemplate;
    @Resource
    LoadBalancer loadBalancer;
    @Resource
    DiscoveryClient discoveryClient;


    @PostMapping("/consumer/payment/create")
    public CommonResult<Payment> create(@RequestBody Payment payment){
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
    }

    @GetMapping("/consumer/payment/read/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id){
        System.out.println("进入这里...");
        return restTemplate.getForObject(PAYMENT_URL+"/payment/read/"+id,CommonResult.class);
    }

    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPayment2(@PathVariable("id") Long id){
        ResponseEntity<CommonResult> entity =
                restTemplate.getForEntity(PAYMENT_URL+"/payment/read/"+id,CommonResult.class);
        if (entity.getStatusCode().is2xxSuccessful()){
            log.info(entity.getStatusCode()+"\t"+entity.getBody());
            return entity.getBody();
        }else{
            return new CommonResult<>(false,444,"操作失败ing!");
        }
    }

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLb(){
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if(instances == null || instances.size() <= 0){
            return null;
        }
        ServiceInstance serviceInstance = loadBalancer.ins(instances);
        URI uri = serviceInstance.getUri();
        System.out.println("输出测试域名前缀--->:"+uri.toString());
        System.out.println("输出测试域名--->:"+uri.getHost());
        return restTemplate.getForObject(uri+"/payment/lb",String.class);
    }

    //========>zipkin+sleuth
    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipKin(){
        String forObject = restTemplate.getForObject("http://localhost:8001" + "/payment/zipkin", String.class);
        return forObject;
    }
}
